614 PROCEEDINGS OP WASHINGTON MEETING. 



On reiissembling, the following paper was read : 



THE RELATION OF SECULAR ROCK-DISINTEGRATION TO CERTAIN TRANSI- 

 TIONAL CRYSTALLINE SCHISTS. 



BY RAPHAEL PUMPELLT, 



This communication was discussed by Jed. Hotchkiss, G. K. Gilbert, H. S. 

 Williams, B. K. Emerson, F. L. Nason and the author, and will be found, 

 with the more considerable part of the discussion, on pages 209-224 of this 

 volume. 



The next two papers were read by title : 



A PROPOSED SYSTEM OF CHRONOLOGIC CARTOGRAPHY ON A PHYSIO- 

 GRAPHIC BASIS. 



BY T. C. CHAMBERLIN. 



THE GEOLOGICAL DATES OF ORIGIN OF CERTAIN TOPOGRAPHIC FORMS ON 

 THE ATLANTIC SLOPE OF THE UNITED STATES. 



BY W. M. DAVIS. 



The papers form pages 541-586 of this volume. 

 The following communication was then presented : 



GRAPHIC FIELD NOTES FOR AREAL GEOLOGY. 

 BY BAILEY WILLIS. 



It was discussed by G. F. Becker, Jed. Hotchkiss, P. H. Mell, aud G. M. 

 Dawson. It forms pages 177-188, with plate 6, of this volume. 



The next communication was — 



MESOZOIC AND CENOZOIC FORMATIONS OF EASTERN VIRGINIA AND 



MARYLAND. 



BY N. H. DARTON. 



It is printed as pages 431-450, with plate 16, of this volume. 

 The next two papers were read and discussed together : 



THE CHAZY FORMATION IN THE CHAMPLAIN VALLEY. 

 BY EZRA BRAINERD. 



Printed, with plate 11, as pages 293-300 of this volume. 



